|Full name||Temitayo Olufisayo Olaoluwa Aina|
|Date of birth||8 October 1996|
|Place of birth||Southwark, London, England|
|Height||6 ft 0 in (1.82 m)|
|2017–2018||→ Hull City (loan)||44||(0)|
|2018–2019||→ Torino (loan)||30||(1)|
* Senior club appearances and goals counted for the domestic league only and correct as of 18:00, 17 November 2019 (UTC)|
‡ National team caps and goals correct as of 12:07, 25 July 2019 (UTC)
Ola Aina signed for Chelsea as an under-11 and made his youth team debut as a schoolboy in the 2012–13 season and went on to start in both legs of the semi-final and final of the FA Youth Cup. In his youth career, he has also represented Chelsea in the under-18s, under-19s, and under-21 levels. On 19 July 2014, Aina made his first-team debut in a pre-season friendly against AFC Wimbledon, after Todd Kane's injury. Aina started the match and was substituted at half-time for Branislav Ivanović as Chelsea went on to win 3–2.
Before the 2015–16 season, he was included in the pre-season tour, playing three matches in the International Champions Cup. After impressing Chelsea manager José Mourinho, Aina was included in the first-team squad for the campaign. Although he spent the entire season training full-time with the first-team, he continued his role in the under-21s and under-19s sides. On 23 September 2015, Aina was included in the match-day squad against Walsall in the fourth round of the League Cup, although he was an unused substitute.
Due to a lack of first-team opportunities, Aina refused a new contract despite his current contact ending at the end of the season.
On 6 July 2016, he signed a new four-year contract, ending the rumours of him leaving the London side. After signing a new contract, Aina was included in the travelling squad to Austria and the United States. He went on to play in all six pre-season matches. On 23 August 2016, Aina was given his professional debut by manager Antonio Conte in a 3–2 victory over Bristol Rovers in the EFL Cup, being replaced by John Terry in the 77th minute. On 15 October 2016, he made his Premier League debut in a 3–0 victory over reigning champions Leicester City, replacing goalscorer Victor Moses in the 82nd minute.
Loan to Hull City
On 11 July 2017, Chelsea announced that they had loaned Aina to Championship side Hull City. He made his debut on the opening day of the season, 5 August 2017, away to Aston Villa, in a 1–1 draw. He scored the only goal in a 1–0 defeat of Blackburn Rovers in the third-round of the FA Cup on 6 January 2018.
Loan to Torino
On 14 August 2018, Aina joined Italian club Torino on a season-long loan after signing a new three-year deal with Chelsea. He made his Serie A debut a few days later in Torino's 0–1 opening day defeat at home to Roma, coming on as a substitute in place of fellow right-back Lorenzo De Silvestri who went off injured after just 25 minutes.
On 11 June 2019, Torino triggered Aina's option to permanently transfer from Chelsea for a reported fee of £9 million.
England youth teams
On 28 March 2017, Aina was pictured alongside Chuba Akpom of Arsenal after discussions with Nigeria Football Federation president, Amaju Pinnick. In May 2017, Aina pledged his international future to Nigeria and obtained a Nigerian passport in preparation to making the switch from England to Nigeria. In the same month, he was called up for the first time to play for Nigeria.
In May 2018 he was named in Nigeria's preliminary 30 man squad for the 2018 World Cup in Russia. However, he did not make the final 23. He was later recalled into the squad and played a major role in the team's qualification for AFCON 2019 held in Egypt. He played the first match against tournament debutant Burundi, assisting the only goal of the match.
- As of match played 9 November 2019.
|Club||Season||League||National Cup||League Cup||Europe||Other||Total|
|Hull City (loan)||2017–18||Championship||44||0||2||1||0||0||—||—||46||1|
|Torino (loan)||2018–19||Serie A||30||1||2||0||—||—||—||32||1|
- As of matches played on 19 July 2019
|Nigeria national team|
- Barclays U21 Premier League: 2013–14
- FA Youth Cup: 2013–14, 2014–15
- UEFA Youth League: 2014–15, 2015–16
- "Updated squads for 2017/18 Premier League confirmed". Premier League. 2 February 2018. Retrieved 10 February 2018.
- "Ola Aina". 11v11.com. AFS Enterprises. Retrieved 20 July 2019.
- "Ola Aina Chelsea Profile". Chelsea F.C. Retrieved 23 August 2016.
- "Match report: AFC Wimbledon 2 Chelsea 3". Chelsea F.C. 19 July 2014. Retrieved 26 August 2016.
- "Walsall 1–4 Chelsea". BBC Sports. 23 September 2015. Retrieved 26 August 2016.
- "Arsenal join transfer race to sign Chelsea's England Under-21 right-back Ola Aina". 11 January 2016. Retrieved 26 August 2016.
- "Aina seals new deal". Chelsea F.C. 6 July 2016. Retrieved 26 August 2016.
- "Chelsea 3–2 Bristol Rovers". BBC Sport. 23 August 2016. Retrieved 23 August 2016.
- "Chelsea 3–0 Leicester City". BBC Sport. 15 October 2016. Retrieved 15 October 2016.
- "First loan for Aina". Chelsea Official Site. 11 July 2017. Retrieved 11 July 2017.
- "Aston Villa 1–1 Hull City". BBC Sport. BBC. 5 August 2017. Retrieved 5 August 2017.
- "Blackburn Rovers 0–1 Hull City". BBC Sport. BBC. 6 January 2018. Retrieved 6 January 2018.
- "New contract and loan for Aina". Chelsea Official Site. 14 August 2018. Retrieved 14 August 2018.
- "Fixtures and Results - Season 2018-19 - 1^ Match Day - Lega Serie A". www.legaseriea.it. Retrieved 19 August 2018.
- Oludare, Shina (28 March 2017). "Chelsea's Ola Aina, Brighton and Hove Albion's Chuba Akpom pledge allegiance to Nigeria". Goal Nigeria. Retrieved 28 March 2017.
- "NFF confirms Ola Aina, Joel Bazee now have Nigerian passports, Tammy Abraham to follow". 12 May 2017. Retrieved 15 May 2017.
- "NFF formally applies for Aina's int'l switch – Vanguard News". 4 May 2017. Retrieved 15 May 2017.
- "Chelsea's Ola Aina gets Nigeria call". Retrieved 17 May 2017.
- Adewoye, Gbenga (6 June 2018). "'Maybe next time,' Ola Aina unruffled missing out in Nigeria World Cup Squad". Goal. Retrieved 25 July 2019.
- "World Cup 2018: Arsenal's Iwobi in Nigeria's 23-man squad". BBC Sport. 3 June 2018. Retrieved 20 August 2018.
- Ola Aina at Soccerway. Retrieved 8 January 2017.
- Ola Aina at National-Football-Teams.com
- "Ola Aina's Profile". Chelsea F.C. 23 August 2016. Retrieved 26 August 2016.